Honestly not even sure I agree that you're being taken advantage of if the policy is enacted after your hiring.
A bonus is a bonus. It is given out at the companies discretion, unless stipulated in your employment contract.
>> Why is your first reaction to "riot" instead of just "quit"?
>>> Why, when someone tries to take advantage of you, is your first reaction to retreat?
Because, "rioting" when you don't get your way is... unprofessional?
